Can end with bonded seal slide

ABSTRACT

&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt; &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt; &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt; &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;ur width. The can end has a can end lapping portion and a can end saling portion adjacent the pour opening and a plane of bulge strength adjacent the entry aperture. A slide is adpated to pass through the entry aperture and has a slide lapping portion and a slide sealing portion. The slide lapping portion is adapted to register with the can end lapping portion, and the slide sealing portion is adapted to register with the plane of bulge strength. A pull tab has a connection to the slide. Engaging means engage the can end lappin g portion to press the can end lapping portion into intimate contact with the slide lapping portion and the slide sealing portion into intmate contact with the plane of bulge strength. A pressure barrier material is providd for sealing lapping contacting can end sealing portion and the slide lapping portion and also for sealing the intimately contacting plane of bulge strength and intimate slide sealing portion. The pressure barrier material is bonded to the can provided sealing portion with a first predetermined shear strength and to the slide lapping portion and to the plane of bulge strength with a second predetermined shear strength less than the first predetermined shear strength. The pull predetermined shear strength. The pull tab has a pivot plane at the connection to the slide, has a pressure portion on the one side of the connection, and has a beam strength greater than the beam strength of the slide. The pull tab is movable away from the can end lapping portion about the plane of weakness to cause the pressure portion to break the bond between the slide lapping portion and the pressure barrier material adjacent the can end sealing portion so that the pressure barrier material adjacent the can end sealing portion now functions as an exit and reclosure slide guide. The pull tab then is movable to break the bond between the pressure barrier material adjacent the plane of bulge strength and the slide sealing portion and to cause the slide to move through the entry aperture on the pressure barrier material adjacent the plane of bulge strength on such pressure barrier material as a guide to uncover the pour opening.

United States Patent [191 Douty 1 Apr. 17, 1973 CAN END WITH BONDED SEAL SLIDE [2]] Appl. No.: 214,851

Related US. Application Data Division of Ser. No. 61,384, Aug. 5, 1970, Pat. No. 3,622,055.

US. Cl ..222/541 Int. Cl. ..B65d 47/10 Field of Search ..222/548, 556, 555, 222/484, 541, 559, 561, 557; 220/41, 47, 53, 54, 23, 46; 229/7 SC [56] References Cited UNITED STATES PATENTS 3,308,986 3/l967 Balocca et al. ..220/53 Primary ExaminerStanley H. Tollberg AttorneyRobert J. Leek, Jr.

[57] ABSTRACT A can end is providedwitliapour opening and li as a pour width. The pour opening is provided with an entry aperture at one end of the pour opening. The entry aperture has a slide width greater than the pour width. The can end has a can end lapping portion d' an and saline a e ja entl P vert.

ing and a plane of bulge strength adjacent the entry aperture. A slide is adapted to pass through the entry aperture and has a slide lapping portion and a slide sealing portion. The slide lapping portion is adapted to register with the can end lapping portion, and the slide sealing portion is adapted to register with the plane of bulge strength. A pull tab has a connection to the slide. Engaging means engage the can end lappin g portion to press the can end lapping portion into intimate contact with the slide lapping portion and the slide sealing portion into intmate contact with the plane of bulge strength. A pressure barrier material is providd for sealing lapping contacting can end sealing portion and the slide lapping portion and also for sealing the intimately contacting plane of bulge strength and intimate slide sealing portion. The pressure barrier material is bonded to the can provided sealing portion with a first predetermined shear strength and to the slide lapping portion and to the plane of bulge strength with a second predetermined shear strength less than the first predetermined shear strength. The pull predetermined shear strength. The pull tab has a pivot plane at the connection to the slide, has a pressure portion on the one side of the connection, and has a beam strength greater than the beam strength of the slide. The pull tab is movable away from the can end lapping portion about the plane of weakness to cause the pressure portion to break the bond between the slide lapping portion and the pressure barrier material adjacent the can end sealing portion so that the pressure barrier material adjacent the can end sealing portion now functions as an exit and reclosure slide guide. The pull tab then is movable to break the bond between the pressure barrier material adjacent the plane of bulge stren h and the slide sealing portron and to cause the sh e to move through the entry aperture on the pressure barrier material adjacent the plane of bulge strength on such pressure barrier material as a guide to uncover the pour opening.

61 Claims, 71 Drawing Figures PATENTEDAPR I 71973 sum 01 or 34 PATENTED APR I 7 I973 sum 03 0F 34 PATENTEI] APR 1 7 I975 sum on n? 4 PATENTEBAPR 1 H975 sum as or 34 w 1\\\\\\\\i\\\\\\\\\\\\\\\\\\\\\\\\\\\ A ll PATENTEDAPR 1 7191s SHEET 09 [1F 34 FIG. 80

FIG. 8E

PATENTEB APR I H975 SHEET 1011f 34 mm q I I mo PATENTEU R 1 7 i973 sum 11 or 34 PATENTED APR 1 H973 SHEET 12- UF 34 m: oE

PATENTEDAPR 1 11915 3.727. 809

SHEET 13 nr 34 C FIG. I2A

FIG. IZC

PATENTED APR I 7 I975 SHEET 15 HF 34 P T APR 1 7191s SHEET 18 0F 34 0Q AQ/M FIG. I3F

PATENTED APR 1 H975 SHEET 17 OF 34 PATENTEBAPR 1 7197s 727, 09

SHEET 18 0F 34 PATENTEDAPR 1 H913 SHEET 19 [1F 34 

1. In combination: a. a can end provided with a pouR opening having a pour width,
 1. said pour opening being provided with an entry aperture at one end of said pour opening, said entry aperture having a slide width greater than said pour width,
 2. said can end having a can end lapping portion and a can end sealing portion adjacent said pour opening and a plane of bulge strength adjacent said entry aperture, b. a slide adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion,
 1. said slide lapping portion being adapted to register with said can end lapping portion, and
 2. said slide sealing portion being adapted to register with said plane of bulge strength, c. a pull tab having a connection to said slide, d. engaging means engaging said can end lapping portion to press said can end lapping portion into intimate contact with said slide lapping portion and said slide sealing portion into intimate contact with said plane of bulge strength, e. a pressure barrier material for sealing said intimately contacting can end sealing portion and said slide lapping portion and also for sealing said intimately contacting plane of bulge strength and said slide sealing portion,
 1. said pressure barrier material being bonded to said can end sealing portion with a first predetermined shear strength and to said slide lapping portion and to said plane of bulge strength with a second predetermined shear strength less than said first predetermined shear strength, f. said pull tab having a pivot plane at said connection to said slide, having a pressure portion on the one side of said connection and having a beam strength greater than the beam strength of said slide, g. said pull tab being movable away from said can end lapping portion about said plane of weakness to cause said pressure portion to break the bond between said slide lapping portion and said pressure barrier material adjacent said can end sealing portion so that said pressure barrier material adjacent said can end sealing portion now functions as an exit and reclosure slide guide, and h. said pull tab then being movable to break the bond between said pressure barrier material adjacent said plane of bulge strength and said slide sealing portion and to cause said slide to move through said entry aperture on said pressure barrier material adjacent said plane of bulge strength and on such pressure barrier material as a guide to uncover said pour opening.
 2. said slide sealing portion being adapted to register with said plane of bulge strength, c. a pull tab having a connection to said slide, d. engaging means engaging said can end lapping portion to press said can end lapping portion into intimate contact with said slide lapping portion and said slide sealing portion into intimate contact with said plane of bulge strength, e. a pressure barrier material for sealing said intimately contacting can end sealing portion and said slide lapping portion and also for sealing said intimately contacting plane of bulge strength and said slide sealing portion,
 2. The combination recited in claim 1 wherein said entry aperture is a slit.
 2. said slide sealing portion being adapted to register with said plane of bulge strength, c. a pull tab having a connection to said slide, d. engaging means engaging said can end lapping portion to press said can end lapping portion into intimate contact with said slide lapping portion and said slide sealing portion into intimate contact with said plane of bulge strength, e. a pressure barrier material for sealing said intimately contacting can end sealing portion and said slide lapping portion and also for sealing said intimately contacting plane of bulge strength and said slide sealing portion,
 2. said can end having a can end lapping portion and a can end sealing portion adjacent said pour opening and a plane of bulge strength adjacent said entry aperture, b. a slide adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion,
 2. said can end having a can end lapping portion and a can end sealing portion adjacen t said pour opening and a plane of bulge strength adjacent said entry aperture, b. a slide having a pivot on said can end and adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion,
 2. said can end having a can end lapping portion and a can end sealing portion adjacent said pour opening and a plane of bulge strength adjacent said entry aperture, b. a slide adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion,
 2. said slide sealing portion being adapted to register with said plane of bulge strength, c. a pull tab having a connection to said slide, d. engaging means engaging said can end lapping portion to press said can end lapping portion into intimate contact with said slide lapping portion and said slide sealing portion into intimate contact with said plane of bulge strength, e. a pressure barrier material for sealing said intimately contacting can end sealing portion and said slide lapping portion and also for sealing said intimately contacting plane of bulge strength and said slide sealing portion,
 2. said can end having a can end lapping portion and a can end sealing portion adjacent said pour opening and a plane of bulge strength adjacent said entry aperture, b. a slide pivoted on said can end and adapted to pass through said entry aperture and having a slide lapping portion and a slide sealing portion,
 2. said slide sealing portion being adapted to register with said plane of bulge strength, c. a pull tab having a connection to said slide,
 3. The combination recited in claim 1 wherein said entry aperture is a slot.
 4. The combination recited in claim 1 wherein said entry aperture is provided with a slide guide means.
 5. The combination recited in claim 1 wherein said slide has a bulge strength measured in pounds per square inch equal to or greater than the bulge strength of said can end.
 6. The combination recited in claim 1 wherein said engaging means is said pull tab engaging said can end lapping portion.
 7. The combination recited in claim 1 wherein said engaging means has a stationary member supporting one member of said pull tab, said slide and said can end and a movable member engaging another member of said pull tab, said slide and said can end.
 8. The combination recited in claim 1 wherein said connection is within said pour opening.
 9. The combination recited in claim 1 wherein said connection is integral with one of said pull tab and said slide.
 10. The combination recited in claim 1 wherein said connection is separate from one of said pull tab and said slide.
 11. The combination recited in claim 1 wherein said engaging means is magnetic.
 12. The combination recited in claim 1 wherein said connection engages said entry aperture and functions as a stop to prevent said slide from leaving said entry aperture.
 13. The combination recited in claim 1 and having stop means on said slide for engaging said entry aperture to prevent saId slide from leaving said entry aperture.
 14. The combination recited in claim 1 wherein said connection is a weld.
 15. The combination recited in claim 1 wherein said connection is an adhesive.
 16. The combination recited in claim 1 wherein said pressure portion is a leg.
 17. The combination recited in claim 1 wherein said pour opening is radial.
 18. The combination recited in claim 1 wherein said pour opening is chordal.
 19. The combination recited in claim 1 wherein said can end has an embossment around said pour opening.
 20. The combination recited in claim 19 wherein said embossment is upward.
 21. The combination recited in claim 19 wherein said embossment is downward for vacuum sealing.
 22. The combination recited in claim 1 wherein said pressure portion has a locking tab for engaging said can end.
 23. The combination recited in claim 22 wherein said locking tab has a locking tab plane of weakness.
 24. The combination recited in claim 1 wherein said pour opening has substantially straight sides and said entry aperture vents said can end when said pour opening is upward.
 25. The combination recited in claim 1 wherein said pour opening has arcuate sides and said entry aperture vents said can end when said pour opening is exposed.
 26. The combination recited in claim 1 wherein said pull tab is of the corrugated type.
 27. The combination recited in claim 1 wherein said pull tab is of the ring type.
 28. The combination recited in claim 1 wherein said pull tab is of the serrated type.
 29. The combination recited in claim 1 wherein said pull tab is of the projecting type.
 30. The combination recited in claim 1 wherein said pull tab is of the waffle type.
 31. The combination recited in claim 1 wherein said pull tab has a plurality of protuberances.
 32. The combination recited in claim 1 wherein said pull tab has a plurality of cavities.
 33. The combination recited in claim 1 wherein said pull tab is of the embossed aperture type.
 34. In combination: a. a can end provided with a pour opening having a pour width,
 35. The combination recited in claim 1 wherein said can end is provided with a vent aperture and one vent closure portion of said slide or said pull tab is adapted to cover said vent aperture, said pressure barrier material being adapted to seal said vent aperture to said one vent closure portion,said one vent closure portion being operable to break said seal between said vent aperture and said one vent closure portion when said slide moves out of said entry aperture.
 36. The combination recited in claim 35 wherein said vent aperture is provided with a vent entry aperture.
 37. The combination recited in claim 36 wherein said vent entry aperture is a slot.
 38. The combination recited in claim 36 wherein said vent entry aperture is a slit.
 39. The combination recited in claim 36 wherein said vent entry aperture is provided with a slide guide means.
 40. The combination recited in claim 36 wherein said one vent closure portion has stop means for engaging said entry aperture to prevent said one vent closure portion from leaving said entry aperture.
 41. The combination recited in claim 35 wherein said one vent closure portion has a bulge strength measured in lbs./sq. inch equal to or greater than the bulge strength of said can end.
 42. The combination recited in claim 35 wherein said vent aperture is radial.
 43. The combination recited in claim 35 wherein said vent aperture is chordal.
 44. The combination recited in claim 35 wherein said can end has an embossment around vent aperture embossment.
 45. The combination recited in claim 44 wherein said vent aperture embossment is upward.
 46. The combination recited in claim 44 wherein said vent aperture embossment is downward for vacuum seals.
 47. The combination recited in claim 35 wherein said one vent closure portion has locking tab for engaging said can end.
 48. The combination recited in claim 35 wherein said vent aperture has substantially straight sides.
 49. The combination recited in claim 35 wherein said vent aperture has arcuate sides.
 50. The combination recited in claim 35 and having vent closure engaging means, said vent closure engaging means having a stationary member supporting one member of said pull tab, said slide and said can end and a movable member engaging another member of said pull tab, said slide and said can end.
 51. The combination recited in claim 35 having magnetic type vent closure engaging means.
 52. The combination recited in claim 35 wherein said one vent closure portion is integral with either said slide or said pull tab.
 53. The combination recited in claim 35 wherein said one vent closure portion is separate from either said slide or said pull tab and having a vent closure connection for connecting said one vent closure portion to either said slide or said pull tab.
 54. The combination recited in claim 1 wherein said stop means is on said can end.
 55. The combination recited in claim 1 and having stop means on said one vent closure portion for limiting the movement of said slide by engagement of said stop means with said can end.
 56. In combination: a. a can end provided with a pour opening having a pour width,
 57. The combination recited in claim 35 wherein said pull tab is of the expansion type.
 58. In combination: a. a can end provided with a pour opening having a pour width,
 59. In combination: a. a can end provided with an opening and a can end sealing portion, b. a slide disposed against said can end adjacent said opening, and provided with a first pour opening, c. a stationary member disposed against said slide and provided with a second pour opening and a stationary member sealing portion, d. said slide having a slide sealing portion adjacent said second pour opening and being movable to a sealing position where said first pour opening does not overlap said second pour opening, e. a pull tab having a connection to said slide, f. engaging means engaging said can end and one of said slide and said stationary member to position said stationary member sealing portion adjacent said can end sealing portion,and to press said slide against said stationary member adjacent said second pour opening, g. a pressure barrier material for sealing said can end sealing portion to said stationary member sealing portion and said slide sealing portion to said stationary member adjacent said second pour opening,
 60. In combination: a. a can end provided with an opening and a can end sealing portion, b. a slide disposed against said can end adjacent said opening, c. a stationary member disposed against said slide and provided with a pour opening and a stationary member sealing portion, d. said slide having a slide sealing portion adjacent said pour opening and being movable to a sealing position where said pour opening is covered by said slide, e. a pull tab having a connection to said slide, f. engaging means engaging said can end and one of said slide and said stationary member to position said stationary member sealing portion adjacent said can end sealing portion, and to press said slide sealing portion against said stationary member adjacent said pour opening, g. a pressure barrier material for sealing said can end sealing portion to said stationary member sealing portion and said slide sealing portion to said stationary member adjacent said pour opening,
 61. In combination: a. a can end provided with a pour opening, 